Adds Interactive Programming Challenges to Any Page

Challenger is a drop-in JavaScript library that adds interactive programming challenges to any page. Challenges are flexible and expressive, and are super simple to write. A challenge has requirements based on code structure and program output, and gives users a code editor to experiment in. When new code is written, it’s run in a sandbox and the output is analyzed. Challenges can be presented as one-off tests or linked together to form courses.

Requirements: JavaScript Framework
Demo: http://rileyjshaw.com/challenger/
License: MIT License